CN103065898B - Pressure sealing device used for circuit breaker contact system - Google Patents
Pressure sealing device used for circuit breaker contact system Download PDFInfo
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- CN103065898B CN103065898B CN201210587959.0A CN201210587959A CN103065898B CN 103065898 B CN103065898 B CN 103065898B CN 201210587959 A CN201210587959 A CN 201210587959A CN 103065898 B CN103065898 B CN 103065898B
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- contact system
- circuit breaker
- moving contact
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- seal cartridge
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Abstract
A pressure sealing device used for a circuit breaker contact system comprises a bottom plate (1), and a moving contact bus (201) of a moving contact system (2) is installed in an installing hole (101) of the bottom plate (1). The pressure sealing device used for the circuit breaker contact system is characterized in that a sealing bush (3) is installed between the moving contact bus (201) and the installing hole (101) of the bottom plate (1). The pressure sealing device used for the circuit breaker contact system is not affected by processing and assembling errors existing between the moving contact bus and the bottom plate, pressure on the lower portion of a contact is boosted through a method of air passage sealing, the only upward spouting of electric arc is guaranteed, and electric arc generated at time of strong current subsection is rapidly blown into an arc extinguish chamber to be cooled and extinguished. The overall structure can be accomplished after simple modification is performed on an existing device. The pressure sealing device used for the circuit breaker contact system is simple in structure, convenient to install and maintain, and saved in production cost.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology field, specifically just relate to a kind of movable contact system of circuit breaker, especially relate to can increase circuit breaker moving contact contact below the pressure sealing ring mounting structure of pressure.
Background technology
Circuit breaker is divided into primary cut-out and low-voltage circuit breaker by its scope of application.Low-voltage circuit breaker, also known as automatic switch, is commonly called as " air switch " and also refers to low-voltage circuit breaker, and it is a kind of existing hand switch effect, automatically can carry out again decompression, under-voltage, overload and the electrical equipment of short-circuit protection.It can be used to distribute electric energy; infrequently start asynchronous motor; protection is carried out to power circuit and motor etc.; can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they; its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.; and generally do not need to change parts after disjunction fault current, obtain a wide range of applications.
Circuit breaker realizes the protective feature needed for it by installation release, its operation principle is: if when the short circuit current that there occurs in control circuit over the ground or electric shock leakage current, and when reaching breaker protection grade, the electronics magnetizing coil of release is after obtaining enough voltage, create the magnetic field contrary with permanent magnet direction in the suction originally closed at release and magnetic circuit thus counteract the magnetic field intensity that permanent magnet produces, now be in the reasoning spring release of compressive state and eject, push rod is shifted onto, the power that push rod is released triggers shunt release and line disconnection, protect line security.
Omnipotent breaker is the important component part in distribution apparatus; be mainly used in industrial low-voltage power system, be used for connecting and electric current in disjunction mains-power circuit and protection circuit and power-supply device from the harm of the faults such as overload, under voltage, short circuit, single-phase earthing.
The breaking capacity of omnipotent breaker weighs the leading indicator of circuit breaker performance.Especially when heavy current disjunction, a large amount of high-temperature electric arc can be produced instantaneously, if the electric arc arc control device that can not enter fast above circuit breaker cool, extinguish, and restrike between dynamic and static contact, dynamic and static contact will be damaged.In order to electric arc being introduced arc control device above circuit breaker fast, traditional solution adopts metal arc striking piece that electric arc is introduced arc control device.But owing to there is manufacturing and positioning errors between moving contact bus and base plate, the gap that can exist all the time between two parts, arcing gas can be scurried out part from this gap, pressure below contact system is caused to reduce, thus do not have enough pressure electric arc to be blown into fast cooling in arc control device, to extinguish, cause hidden danger.
Summary of the invention
Technical barrier to be solved by this invention is just to inevitable due to manufacturing and positioning errors of existing moving contact of breaker system, the arcing gas produced during heavy current segmentation can be escaped from and cause not having enough pressure electric arc to be blown into rapidly in arc control device the defect cooling, extinguish from gap, a kind of pressure seal arrangement for breaker contact system is provided, parts can be avoided to assemble gap to the impact of movable contact system pressure, ensure that the electric arc that heavy current disjunction produces is blown into rapidly cooling in arc control device, extinguishes.
Technical scheme
In order to realize above-mentioned technical purpose, the present invention designs a kind of pressure seal arrangement for breaker contact system, it comprises base plate, and the moving contact bus of movable contact system loads in the installing hole of base plate, it is characterized in that: between the installing hole of described moving contact bus and base plate, seal cartridge is housed;
Described seal cartridge is in-flanges ring bush, the in-flanges of seal cartridge stretches in installing hole, seal cartridge viscose fits tightly on base plate, the moving contact bus of movable contact system insert the varus of ring packing lining lateral opening in, moving contact bus and ring packing lining interference fit.Moving contact bus and seal cartridge interference fit.
Further, described seal cartridge silicon rubber makes.
Further, the high 2 ~ 5mm of the in-flanges of described seal cartridge.
Further, described seal cartridge fusion point is higher than 150 DEG C.
Beneficial effect
Pressure seal arrangement for breaker contact system provided by the invention, not by the impact that there is manufacturing and positioning errors between moving contact bus and base plate, pressure below contact is increased by closed airway mode, ensure that electric arc upwards can only spray arc, the electric arc produced during heavy current segmentation is blown into rapidly cooling in arc control device, extinguishes, and total only need be done simple transformation and can complete on existing equipment, and structure is simple, installation and maintenance are convenient, saved production cost.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is explosive views of the present invention.
Accompanying drawing 3 is front views of the present invention.
Accompanying drawing 4 is seal cartridge product figure in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment
As shown in accompanying drawing 1 ~ 4, for a pressure seal arrangement for breaker contact system, it comprises base plate 1, and the moving contact bus 201 of movable contact system 2 loads in the installing hole 101 of base plate 1, wherein, between the installing hole 101 of described moving contact bus 201 and base plate 1, seal cartridge 3 is housed;
Described seal cartridge 3 is in-flanges ring bush, the in-flanges 301 of seal cartridge 3 stretches in installing hole 101, seal cartridge 3 viscose fits tightly on base plate 1, the moving contact bus 201 of movable contact system 2 inserts in the varus lateral opening 302 of ring packing lining 3, moving contact bus 201 and ring packing lining 3 interference fit.Moving contact bus 201 and seal cartridge 3 interference fit.
Described seal cartridge 3 makes of silicon rubber.
High 2 ~ the 5mm of in-flanges 301 of described seal cartridge 3.
Described seal cartridge 3 fusion point is higher than 150 DEG C.
Pressure seal arrangement for breaker contact system provided by the invention, gap between moving contact bus 201 and base plate 1 is completely closed, make not leak gas below contact, lose heart, total is not by the impact that there is manufacturing and positioning errors between moving contact bus and base plate, pressure below contact is increased by closed airway mode, ensure that electric arc upwards can only spray arc, the electric arc produced during heavy current segmentation is blown in arc control device rapidly and cools, extinguish, total only need be done simple transformation and can complete on existing equipment, structure is simple, installation and maintenance are convenient, save production cost.
Claims (3)
1. the pressure seal arrangement for breaker contact system, it comprises base plate (1), the moving contact bus (201) of movable contact system (2) loads in the installing hole (101) of base plate (1), it is characterized in that: between the installing hole (101) of described moving contact bus (201) and base plate (1), seal cartridge (3) is housed;
Described seal cartridge (3) is in-flanges ring bush, the in-flanges (301) of seal cartridge (3) stretches in installing hole (101), seal cartridge (3) viscose fits tightly on base plate (1), the moving contact bus (201) of movable contact system (2) inserts in the varus lateral opening (302) of ring packing lining (3), moving contact bus (201) and ring packing lining (3) interference fit;
Described seal cartridge (3) fusion point is higher than 150 DEG C.
2. a kind of pressure seal arrangement for breaker contact system as claimed in claim 1, is characterized in that: described seal cartridge (3) makes of silicon rubber.
3. a kind of pressure seal arrangement for breaker contact system as claimed in claim 1, is characterized in that: in-flanges (301) high 2 ~ 5mm of described seal cartridge (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587959.0A CN103065898B (en) | 2012-12-29 | 2012-12-29 | Pressure sealing device used for circuit breaker contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587959.0A CN103065898B (en) | 2012-12-29 | 2012-12-29 | Pressure sealing device used for circuit breaker contact system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103065898A CN103065898A (en) | 2013-04-24 |
| CN103065898B true CN103065898B (en) | 2015-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210587959.0A Active CN103065898B (en) | 2012-12-29 | 2012-12-29 | Pressure sealing device used for circuit breaker contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103065898B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819084A (en) * | 2004-11-03 | 2006-08-16 | 伊顿公司 | Arc hood and power distribution system including the same |
| CN101599389A (en) * | 2009-07-13 | 2009-12-09 | 西安森源开关技术研究所有限公司 | Double acting self energy thermal expansion type high pressure sulfur hexafluoride breaker arc extinguish chamber |
| CN201651061U (en) * | 2010-02-02 | 2010-11-24 | 浙江永艺家具有限公司 | Lining |
| EP2398033A2 (en) * | 2010-06-16 | 2011-12-21 | Eaton Corporation | Moving seal with arc creepage surface for an air circuit breaker |
| CN202126976U (en) * | 2011-06-29 | 2012-01-25 | 上海良信电器股份有限公司 | Moving contact bus for breaker |
| CN202423182U (en) * | 2011-12-09 | 2012-09-05 | 常熟开关制造有限公司(原常熟开关厂） | Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure |
| CN203038881U (en) * | 2012-12-29 | 2013-07-03 | 上海良信电器股份有限公司 | Pressure seal device used for circuit breaker contact system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7586058B2 (en) * | 2007-04-27 | 2009-09-08 | Eaton Corporation | Electrical switching apparatus, and ARC hood assembly and chimney therefor |
-
2012
- 2012-12-29 CN CN201210587959.0A patent/CN103065898B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819084A (en) * | 2004-11-03 | 2006-08-16 | 伊顿公司 | Arc hood and power distribution system including the same |
| CN101599389A (en) * | 2009-07-13 | 2009-12-09 | 西安森源开关技术研究所有限公司 | Double acting self energy thermal expansion type high pressure sulfur hexafluoride breaker arc extinguish chamber |
| CN201651061U (en) * | 2010-02-02 | 2010-11-24 | 浙江永艺家具有限公司 | Lining |
| EP2398033A2 (en) * | 2010-06-16 | 2011-12-21 | Eaton Corporation | Moving seal with arc creepage surface for an air circuit breaker |
| CN202126976U (en) * | 2011-06-29 | 2012-01-25 | 上海良信电器股份有限公司 | Moving contact bus for breaker |
| CN202423182U (en) * | 2011-12-09 | 2012-09-05 | 常熟开关制造有限公司(原常熟开关厂） | Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure |
| CN203038881U (en) * | 2012-12-29 | 2013-07-03 | 上海良信电器股份有限公司 | Pressure seal device used for circuit breaker contact system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103065898A (en) | 2013-04-24 |
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